1647725115056 has 40 divisors (see below), whose sum is σ = 3380498232480. Its totient is φ = 775345316864.

The previous prime is 1647725115041. The next prime is 1647725115083. The reversal of 1647725115056 is 6505115277461.

It is a junction number, because it is equal to n+sod(n) for n = 1647725114995 and 1647725115013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3783485 + ... + 4196451.

It is an arithmetic number, because the mean of its divisors is an integer number (84512455812).

Almost surely, 2^{1647725115056} is an apocalyptic number.

1647725115056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1647725115056 is an abundant number, since it is smaller than the sum of its proper divisors (1732773117424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1647725115056 is a wasteful number, since it uses less digits than its factorization.

1647725115056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427661 (or 427655 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 1647725115056 in words is "one trillion, six hundred forty-seven billion, seven hundred twenty-five million, one hundred fifteen thousand, fifty-six".